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Near-infrared diode laser airborne hygrometer.

Author(s) : SILVER J. A., HOVDE D. C.

Type of article: Article

Summary

The authors describe a new laser-based hygrometer for ambient water vapour monitoring which uses a fiber-optic coupled, near-infrared diode laser in conjunction with high frequency wavelength modulation spectroscopy. This instrument was flown for a period of six months and measured frost points at altitudes between 10,000 and 40,000 feet. The water detection sensitivity corresponds to a volume mixing ratio of 8 ppm V. Further improvements including the use of newly designed near-infrared lasers are expected to realize frost points below -100 deg C.

Details

  • Original title: Near-infrared diode laser airborne hygrometer.
  • Record ID : 1995-1538
  • Languages: English
  • Source: Rev. sci. Instrum. - vol. 65 - n. 5
  • Publication date: 1994/05
  • Document available for consultation in the library of the IIR headquarters only.

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